Zinsser Gardz


A unique water-based sealer for porous and potential problem surfaces. Gardz® is formulated to deeply penetrate and dry to a hard, moisture resistant film that seals and binds down porous, chalky and crumbling surfaces, paints and textured finishes.

• Repairs torn paper on damaged drywall, eliminating bubbles
• Protects and seals new plasterboard, ready for wallpapering or painting
• Designed for use on porous interior surfaces
• Seals old wallpaper adhesive, skim coats and filled areas
• For use with brush, roller or spray
• Cleans up with soap and water
• Easy to apply and recoatable in just 3 hours

£8.41(ex. VAT)
£10.09 (inc. VAT)
Please choose your colour
In Stock and Available for Delivery (See Delivery Options Below)


Gardz® is another high-performance interior-use product from Zinsser which every maintenance and project manager should have to hand. Like so many of Zinsser’s paints and coatings range, Gardz® is a specialist problem-solving product – a water-based sealer for porous surfaces. Formulated to deeply penetrate surfaces and substrates, Gardz® will dry to a hard and moisture resistant film, sealing and binding down porous, chalky and crumbling surfaces.

Recommended by Zinsser for use on damaged walls, failing paints and textured finishes, damaged or new drywall, spackling and joint compound skim coats, calcimine, uncoated wallpaper (see also Zinsser Wallpaper Cover-Up), lining paper, filler and wallcovering adhesive residue. Gardz® sealer can repair torn paper and remove bubbles from drywall. It seals old wallpaper adhesive and with food alkali resistant properties, Zinsser Gardz® can therefore be applied to high pH surfaces. To clean the application equipment, this water-based product simply requires soap and water.

Touch dry in 30 mins, or hard dry to a water-resistant finish in 3 hours, it is also recoatable in just 3 hours. As with other Zinsser products stocked at Rawlins Paints, this allows for maintenance and redecoration after repair work to be quick and easy, minimising downtime, VOCs and cost.

Gardz® dries to a clear finish and is not recommended to be, nor is it sold as a tintable product.

Features and benefits

• Repairs torn paper on damaged drywall, eliminating bubbles
• Protects and seals new plasterboard, ready for wallpapering or painting
• Designed for use on porous interior surfaces
• Seals old wallpaper adhesive, skim coats and filled areas
• Water-based, low odour, dries clear
• Dries fast to a hard, moisture-proof film
• Binds down chalky surfaces
• Can be applied to high-pH surfaces
• For use with brush, roller or spray
• Low odour formula
• Cleans up with soap and water
• Easy to apply and recoatable in just 3 hours

Please note: Errors and omissions excepted (E&OE). It is your responsibility to read all data sheets (available upon request) prior to application. The specification given above is our best recommendation from the information supplied and is given in good faith but without warranty. We recommend a trial area is coated to ensure the product meets your requirements.

Product Details

Data sheet

For Use By
General Use
Interior / Exterior Use
Water / Solvent Based
For Use On
Drywall, Plaster, Calcimine, Wallpaper,
Application Method
Brush, Roller, Spray, Airless Spray
VOC Levels
Ultra-Low (5-49 g/l)
Single, Two or Three Pack
Pack Size
1L, 2.5L, 5L
9-10m² per litre
Touch Dry
30 Mins
Base Type
Exterior / Interior Use
Interior Use
Suitable For Use On
Suitable For Use On
Application Method
Application Method
Application Method
Airless Spray
Application Method
Product Type
Fastest Delivery
Next Working Day
Colour Family

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions Polly  on 2023-01-04 08:59:19

Would this be suitable for stopping chalky, powdery residue coming through our emulsion painted walls. We have a relatively new extension (5 years) with emulsion on lining paper on plaster and we keep having to repaint as this powdery stuff appears on the walls a few weeks after painting.

Answer from Rawlins’ Technical Team: 

Unfortunately no this would not be suitable, please can you provide pictures of the area in question to [email protected] 

questions Jacqui on 2021-11-27 15:48:46

We have had new plasterboard on our walls and skimmed, would this be the right product to apply to the new walls rather than a wet wash

Answer from Rawlins’ Technical Team: 

Yes this can be used on newly plastered areas to seal the surface prior to painting.

questions Nick on 2017-01-02 22:13:07
Question: We have a problem internal wall. It was originally builtas an external wall late 18th/early 19th century of mixed north pennine stone with lime mortar. For about 45 years it has been used an an internal wall, covered with gypsum plaster and paint. In patches something causes any paint applied to bubble after about 6 months. Would this product help to solve the problem ?
Answer from Rawlins’ Technical Team: 

Based on your description we would recommend using Zinsser AllCoat (Solvent-Based) and leave this as the finish. Zinsser AllCoat (Solvent-Based) is breathable and will let traces of moisture through the paint film without causing the coating to bubble up, it also has good resistance to high pH.

Zinsser Gardz would seal the substrate and could cause a build up of moisture behind the coating resulting in blisters forming over time.

questions Geraldine on 2016-06-17 17:31:56
Question: I have grease stains on my emulsion wall, can I use this as a blocker before reprinting?
Answer from Rawlins’ Technical Team: 

Zinsser Gardz is not a stain blocker, you would need to clean the area well to remove as much grease as possible then apply Zinsser B-I-N

Best recommendations are to spot prime the stain, allow to dry for a minimum of 45mins before applying a full coat to the whole area or to a natural break, allow to dry for another 45mins and then apply your chosen decorative finish (paint or wallpaper).

questions muriel dyga on 2016-02-11 12:16:20

Can I paint over this with gloss paint or silk paint?

Answer from Rawlins’ Technical Team: 

Nearly all conventional decorative finishes can be used over Zinsser Gardz including emulsions, wallpaper, solvent based primer, undercoat and gloss.

questions robert jones on 2015-06-16 17:08:28

Is Zinsser Gardz effective in stabilising distemper coated ceilings?

Answer from Rawlins’ Technical Team: 

No, we don't recommend water based products to be used over distemper. We would recommend either Zinsser Grade 1 or Zinsser AllCoat (Solvent-Based).


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